Along Spartanburg Highway in an unassuming building that's long been occupied by GE Lighting, a 50,000-square-foot, brand-new production line cranks out hundreds of LED circuit boards a day — bringing ...
Most commercial LED flashlightsuse three AAA or AA batteriesin series that produce 4.5V. The batteriesthen drive four white LEDs that connectin parallel. These LEDs can workat voltages as low as 2.7V ...